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ACS Applied Materials & Interfaces

ACS Applied Materials & Interfaces

IF: 8.3
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Phase Modulation Leads to Ultrahigh Energy Storage Performance in AgNbO3-Based Ceramics and Multilayer Capacitors

Published:6 December 2024 DOI: 10.1021/acsami.4c17212
Yuqing Yang, Weipeng Liu, Xiangshuai Wang, Ting Tang, Lifeng Zhu, Lei Zhao, Kongjun Zhu, Jing Wang

Abstract

Antiferroelectric (AFE) ceramics are competitive energy storage candidates for advanced high-power devices. However, the poor recoverable energy density and efficiency are challenging and severely hinder their applications. Here, superior energy storage performance is obtained in Bi3+-, Sr2+-, and Ta5+-codoped AgNbO3-based ceramics. Specifically, with the effective phase modulation via Bi3+, the paraelectric T phase stabilizes at room temperature and facilitates a recoverable energy storage density of 9.27 J/cm3 and an efficiency of 83.2% in (Ag0.71Bi0.07Sr0.04)(Nb0.85Ta0.15)O3 ceramics. The corresponding multilayer ceramic capacitor (MLCC) further promotes the recoverable energy storage density to 14.32 J/cm3 and efficiency to 97.8%, which is almost the best comprehensive energy storage performance among AN-based ceramics and MLCCs to the best of our knowledge. The proposed strategy is generally applicable to design high-performance energy storage devices and other functionalities of AFE dielectric materials.

Substances (1)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Manganese dioxide 1313-13-9 MnO2 535 suppliers $13.00-$3565.00

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